IT1251220B - Procedimento per la regolazione lambda di un motore endotermico con catalizzatore. - Google Patents

Procedimento per la regolazione lambda di un motore endotermico con catalizzatore.

Info

Publication number
IT1251220B
IT1251220B ITMI911872A ITMI911872A IT1251220B IT 1251220 B IT1251220 B IT 1251220B IT MI911872 A ITMI911872 A IT MI911872A IT MI911872 A ITMI911872 A IT MI911872A IT 1251220 B IT1251220 B IT 1251220B
Authority
IT
Italy
Prior art keywords
catalyst
procedure
regulation
conversion
lambda
Prior art date
Application number
ITMI911872A
Other languages
English (en)
Inventor
Guenther Plapp
Lothar Raff
Michael Westerdorf
Eberhard Schnaibel
Original Assignee
Bosch Gmbh Robert
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bosch Gmbh Robert filed Critical Bosch Gmbh Robert
Publication of ITMI911872A0 publication Critical patent/ITMI911872A0/it
Publication of ITMI911872A1 publication Critical patent/ITMI911872A1/it
Application granted granted Critical
Publication of IT1251220B publication Critical patent/IT1251220B/it

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
    • F02D41/1479—Using a comparator with variable reference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1486—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor with correction for particular operating conditions
    • F02D41/1487—Correcting the instantaneous control value
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
    • F01N2550/02—Catalytic activity of catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

In un procedimento per la regolazione lambda di un motore endotermico con catalizzatore la regolazione viene realizzata in modo che almeno in preassegnati stati di esercizio si verifica una oscillazione di regolazione permanente, la cui ampiezza è possibilmente grande, e tuttavia grande soltanto in modo che non dovrà verificarsi irregolarità di funzionamento del motore endotermico e la quota di conversione media del catalizzatore dovrà rimanere al disopra di un valore di soglia.Questo procedimento si basa sul concetto che aumentando l'ampiezza della oscillazione di regolazione la finestra di conversione diventa più larga, nel presupposto che il catalizzatore risulta ancora in certo qual modo in grado di funzionare.La finestra di conversione è quella intervallo dei valori Lambda, in cui la conversione presenta almeno una qualità preassegnata (figura 1).
ITMI911872A 1990-07-31 1991-07-05 Procedimento per la regolazione lambda di un motore endotermico con catalizzatore. IT1251220B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4024213A DE4024213A1 (de) 1990-07-31 1990-07-31 Verfahren zur lambdaregelung einer brennkraftmaschine mit katalysator

Publications (3)

Publication Number Publication Date
ITMI911872A0 ITMI911872A0 (it) 1991-07-05
ITMI911872A1 ITMI911872A1 (it) 1993-01-05
IT1251220B true IT1251220B (it) 1995-05-04

Family

ID=6411334

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI911872A IT1251220B (it) 1990-07-31 1991-07-05 Procedimento per la regolazione lambda di un motore endotermico con catalizzatore.

Country Status (4)

Country Link
JP (1) JP3242420B2 (it)
DE (1) DE4024213A1 (it)
GB (1) GB2248315A (it)
IT (1) IT1251220B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630940C2 (de) * 1996-07-31 1999-03-04 Siemens Ag Verfahren zur Überprüfung des Katalysatorwirkungsgrades
FR2811375B1 (fr) * 2000-07-07 2003-02-21 Renault Procede de regulation de la richesse du melange carburant/ air d'alimentation d'un moteur a combustion
DE102009050225A1 (de) * 2009-10-22 2011-05-12 Continental Automotive Gmbh Verfahren und Vorrichtung zum Ansteuern eines Abgassensors

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5281438A (en) * 1975-12-27 1977-07-07 Nissan Motor Co Ltd Air fuel ratio controller
DE2713988A1 (de) * 1977-03-30 1978-10-05 Bosch Gmbh Robert Verfahren und einrichtung zur bestimmung der verhaeltnisanteile des einer brennkraftmaschine zugefuehrten kraftstoff-luftgemisches
US4502444A (en) * 1983-07-19 1985-03-05 Engelhard Corporation Air-fuel ratio controller
DE3408635A1 (de) * 1984-03-09 1985-09-12 Robert Bosch Gmbh, 7000 Stuttgart Lambda-geregeltes gemischzumesssystem fuer eine brennkraftmaschine
DE3500594C2 (de) * 1985-01-10 1995-08-17 Bosch Gmbh Robert Zumeßsystem für eine Brennkraftmaschine zur Beeinflussung des Betriebsgemisches
US4693076A (en) * 1985-04-09 1987-09-15 Toyota Jidosha Kabushiki Kaisha Double air-fuel ratio sensor system having improved response characteristics
GB8629346D0 (en) * 1986-12-09 1987-01-21 Lucas Ind Plc Engine control

Also Published As

Publication number Publication date
ITMI911872A0 (it) 1991-07-05
GB2248315A (en) 1992-04-01
DE4024213A1 (de) 1992-02-06
JPH04232357A (ja) 1992-08-20
GB9116169D0 (en) 1991-09-11
JP3242420B2 (ja) 2001-12-25
ITMI911872A1 (it) 1993-01-05

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970718